NSG 3315 Lecture Notes - Lecture 30: Defecation, Colonoscopy, Gastric Mucosa
Document Summary
Achalasia - lower esophageal sphincter falls to relax and allow food into the stomach food backs up into the esophagus. Esophageal diverticulum (zenker"s) - dilated pouch or sac in the esophagus that may retain food. Esophageal cancer - 3 to 6 cases/100,000 people more common in men squamous cell more common in last adenocarcinoma more common now with better treatment options. Acute - temporary in ammation of gastric mucosa may be caused by bacteria such as staph, aspirin or nsaids that inhibit prostaglandins, or alcohol. Chronic - chronic in ammatory changes in the stomach mucosa, which can lead to atrophy of the stomach epithelium caused by helicobacter pylori bacteria that also leads to ulcers that may cause severe in ammation. Part of the stomach pushes up through the opening in the diaphragm. Peptic ulcers - an in ammatory erosion in the stomach or duodenal lining causing ulceration remissions and exacerbations are common gastric duodenal - more common.
